package com.tjetc.service.impl;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.tjetc.common.JsonResult;
import com.tjetc.dao.EmployeeMapper;
import com.tjetc.dao.PostInfoMapper;
import com.tjetc.entity.Employee;
import com.tjetc.entity.PostInfo;
import com.tjetc.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {
    @Autowired
    private EmployeeMapper employeeMapper;
    @Autowired
    private PostInfoMapper postInfoMapper;
    @Override
    public JsonResult findById(Long id) {
        //selectById是mybatisplus提供的单表查询操作，生成sql语句都是mybatisplus内置
        PostInfo postInfo = postInfoMapper.selectById(employeeMapper.selectPositionId(id));
        Employee employee=employeeMapper.selectById(id);
        employee.setPositionNames(postInfoMapper.selectPostName());
        employee.setPosition(postInfo);
        return JsonResult.success(employee);
    }
    @Override
    public JsonResult findPage(String name, Integer pageNo, Integer pageSize) {
        //设置页码和每页数量
        Page<Employee> page=Page.of(pageNo,pageSize);
        //把adminPage传入mapper查询中，adminPage就是最后的分页结果
        Page<Employee>employeePage= employeeMapper.selectPageLikeName(page,name);
        for (Employee employee : employeePage.getRecords()) {
            PostInfo postInfo = postInfoMapper.selectById(employeeMapper.selectPositionId(employee.getEmployeeId()));
            employee.setPositionNames(postInfoMapper.selectPostName());
            employee.setPosition(postInfo);
        }
        //convert方法转换Page中 records集合元素类型 Admin---->AdminView
        //new Function<Admin,AdminView>(){};表示创建一个实现Function的匿名类 对象
        return JsonResult.success(employeePage);
    }
    @Override
    public JsonResult deleteById(Long id) {
        int rows=employeeMapper.deleteById(id);
        if (rows>0){
            return JsonResult.success("删除成功");
        }
        else {
            return JsonResult.fail("删除失败");
        }
    }
    //@Transactional用在service方法上，保证事务
    //注意：默认情况@Transactional只对运行时异常起作用(RuntimeException)
    @Transactional
    @Override
    public JsonResult save(Employee employeeParam) {
        Employee employee=null;
        LocalDateTime now=LocalDateTime.now();
        //通过判断id值有无判断是新增还是更新，id值无是新增，id值有就是更新
        if(employeeParam.getEmployeeId()==null||employeeParam.getEmployeeId()<=0){
            //新增
            employee=new Employee();
            BeanUtils.copyProperties(employeeParam,employee);
            employee.setCreateTime(now);
            employee.setUpdateTime(now);
            employeeMapper.insert(employee);
            return JsonResult.success("新增成功",employee.getEmployeeId());
        }else{
            //更新
            //根据id查询Admin信息
            employee=employeeMapper.selectById(employeeParam.getEmployeeId());
            if(employee==null){
                return JsonResult.fail("用户不存在，更新失败");
            }
            //要更新的字段
            employee.setName(employeeParam.getName());
            employee.setUpdateTime(now);
            employee.setAddress(employeeParam.getAddress());
            employee.setEmail(employeeParam.getEmail());
            employee.setPhone(employeeParam.getPhone());
            employee.setAge(employeeParam.getAge());
            employee.setEducation(employeeParam.getEducation());
            employee.setPosition(employeeParam.getPosition());
            employee.setEmergencyContact(employeeParam.getEmergencyContact());
            employee.setEmergencyPhone(employeeParam.getEmergencyPhone());
            employee.setHireDate(employeeParam.getHireDate());
            employee.setMajor(employeeParam.getMajor());
            employee.setPositionId(employeeParam.getPositionId());
            employee.setStatus(employeeParam.getStatus());
            employee.setGender(employeeParam.getGender());
            employee.setIdCard(employeeParam.getIdCard());
            employee.setIsDeleted(employeeParam.getIsDeleted());
            employee.setTerminationDate(employeeParam.getTerminationDate());
            int rows=employeeMapper.updateById(employee);
            if (rows>0){
                return JsonResult.success("更新成功",null);
            }else {
                return JsonResult.fail("用户不存在，更新失败");
            }
        }
    }
}
